Hi Mike,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on iio/togreg]
[also build test WARNING on v5.11-rc4 next-20210120]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Mike-Looijmans/dt-bindings-iio-accel-Add-bmi088-accelerometer-bindings/20210120-152728
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: m68k-allmodconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/f17da22f54858ae666a714de19463d6c29dbdfc6
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Mike-Looijmans/dt-bindings-iio-accel-Add-bmi088-accelerometer-bindings/20210120-152728
        git checkout f17da22f54858ae666a714de19463d6c29dbdfc6
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from include/linux/kernel.h:10,
                    from include/linux/list.h:9,
                    from include/linux/module.h:12,
                    from drivers/iio/accel/bmi088-accel-spi.c:9:
   include/linux/scatterlist.h: In function 'sg_set_buf':
   arch/m68k/include/asm/page_mm.h:174:49: warning: ordered comparison of pointer with null pointer [-Wextra]
     174 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory)
         |                                                 ^~
   include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
      78 | # define unlikely(x) __builtin_expect(!!(x), 0)
         |                                          ^
   include/linux/scatterlist.h:137:2: note: in expansion of macro 'BUG_ON'
     137 |  BUG_ON(!virt_addr_valid(buf));
         |  ^~~~~~
   include/linux/scatterlist.h:137:10: note: in expansion of macro 'virt_addr_valid'
     137 |  BUG_ON(!virt_addr_valid(buf));
         |          ^~~~~~~~~~~~~~~
   drivers/iio/accel/bmi088-accel-spi.c: At top level:
>> drivers/iio/accel/bmi088-accel-spi.c:16:5: warning: no previous prototype for 'bmi088_regmap_spi_write' [-Wmissing-prototypes]
      16 | int bmi088_regmap_spi_write(void *context, const void *data, size_t count)
         |     ^~~~~~~~~~~~~~~~~~~~~~~
>> drivers/iio/accel/bmi088-accel-spi.c:24:5: warning: no previous prototype for 'bmi088_regmap_spi_read' [-Wmissing-prototypes]
      24 | int bmi088_regmap_spi_read(void *context, const void *reg,
         |     ^~~~~~~~~~~~~~~~~~~~~~


vim +/bmi088_regmap_spi_write +16 drivers/iio/accel/bmi088-accel-spi.c

    15	
  > 16	int bmi088_regmap_spi_write(void *context, const void *data, size_t count)
    17	{
    18		struct spi_device *spi = context;
    19	
    20		/* Write register is same as generic SPI */
    21		return spi_write(spi, data, count);
    22	}
    23	
  > 24	int bmi088_regmap_spi_read(void *context, const void *reg,
    25					size_t reg_size, void *val, size_t val_size)
    26	{
    27		struct spi_device *spi = context;
    28		u8 addr[2];
    29	
    30		addr[0] = *(u8 *)reg;
    31		addr[0] |= BIT(7); /* Set RW = '1' */
    32		addr[1] = 0; /* Read requires a dummy byte transfer */
    33	
    34		return spi_write_then_read(spi, addr, sizeof(addr), val, val_size);
    35	}
    36	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org